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SPIE Defense & Commercial Sensing

Featuring: PhaseCam Twyman-Green Interferometer for optical shape and wavefront testing in any environment.

4D Technology designs and manufactures dynamic laser interferometers, optical profilers, surface gauges and polarization cameras for non-contact metrology of precision surfaces, even in the presence of vibration. 4D interferometers acquire data in as little as 30 microseconds, at wavelengths from DUV through IR. Applications include aerospace, defense, astronomy, general optics, and more. 4D Technology is a Nanometrics business.